Pattern drawing machine



J ne 9, 1 J. A HEARD PATTERN DRAWING MACHINE 2 Sheets-Sheet 1 Filed May 20, 1960 John A. Heard June 9, 1964 J. A. HEARD 3,136,061

PATTERN DRAWING MACHINE Filed May 20, 1960 2 Sheets-Sheet 2 4/060 A He 0 0/ INVENTOR.

United States Patent 3,136,061 PATTERN DRAWING MACHINE John A. Heard, 7730 Twin Oaks, San Antonio, Tex. Filed May 20, 1960, Ser. No. 30,638 1 Claim. (Cl. 33-27) This invention relates to new and useful improvements in a pattern drawing machine.

It is an object of this invention to provide a pattern drawing machine for drawing designs for amusement purposes or for use in forming patterns for decorative purposes in illustrations or in sewing and the like.

It is another object of the invention to provide a novel pattern drawing machine that will permit many variations of intricate designs without tracing.

It is another object of the invention to provide a pattern drawing machine having novel means for varying the patterns to be drawn.

It is still a further object of the invention to provide an amusement device, simple to operate and inexpensive to manufacture, of rugged construction and adjustable to alter the pattern of the drawing.

With the above and other objects in view, the invention has relation to certain novel features of construction, operation and arrangement of parts more particularly defined in the following specifications and illustrated in the accompanying drawings, wherein:

FIGURE 1 is a top plan View 'of the device.

FIGURE 2 is a side elevational view, in cross section, taken on the line 2-2 of FIGURE 1.

FIGURE 3 is a bottom view of the device, in cross section, taken on the line 33 of FIGURE 2.

FIGURE 4 is an illustration of a design drawn by the device, and

FIGURE 5 is an illustration of another design drawn by the device.

Referring now more particularly to the drawings, the numeral 1 designates a rigid framework, formed substantially in the shape of a triangle, on which the drawing wheel 2 and the guide Wheels 3, 4 are rotatably mounted. The drawing wheel 2 has suitable paper holding means thereon, suchas the upstanding studs 5, 5, for odd shapes of paper, or discs of paper may be employed, formed to fit on the top of the wheel 2, and beneath the flange 23, and an opening 24 may be formed in the flange 23 to permit the user to insert a fingernail beneath the disc to remove same from the wheel 2. j

A belt, such as the tubular, reinforced rubber member 6, is mounted on the wheels 2, 3, 4, the periphery of the wheels having flanges to receive the belt 6 and maintain same tightly on the wheels. Pivotally mounted on the wheel 3 is the scribe bar 7 which is mounted on the wheel 3 by means of the spring connection 8 loosely mounted on the lock nut 9 at one end and anchored to one end of the bar 7 by a set screw 10.

A suitable scribing means, such as the conventional ball point pen filler 11, is mounted on the bar 7, a port being formed therein 'for that purpose, and a spring holder 12 is mounted on the bar 7 and bears against the scribing means 11, the holder. 12 yieldingly maintaining the scribingmeans in the desired writing position in the bar 7. The free end of the bar 7 is provided with a longitudinal slot 13 through which the guide bar 14 ex-. tends. The guide bar 14 has the upper and lower flanges 15, 16 providing upper and lower stop means, which bear against the upper and lower faces of the bar 7. If de-' sired, the bar 7 may be formed of two pieces of matching material, which will be maintained in puarallel relation the spring 19 which is retained on the framework by means or the nuts 18, 18, said nuts being in axial align 3,136,061 Patented June 9, 1964 ment with the wheel 2. The spring 19 constantly urges the guide 14 upwardly, maintaining the holder 15 in contact with the bar 7. Suitable stops 20, 20 limit the pivotal movement of the spring 19 and guide 14.

Mounted on the wheel 4 is a suitable rotating means such as the upstanding handle 21. Suitable adjustable feet 22, 22 mounted on the externally threaded shafts as 23 may be provided to maintain the framework on a level and maintain the wheels in rotating position.

In operation, a disc of paper, or the like, is mounted on the wheel 2 by perforating same to receive the studs 5, 5 or by pressing the disc into the flanged area of the wheel 2, and a suitable scribing means, such as the ball point pen filler 11 is mounted in the bar 7 and maintained in position by means of the spring 12. The guide 14 is then pivoted to the desired position of adjustment by lifting the bar 7 and moving same laterally to the desired point of beginning. The wheel 4 is then rotated, and the belt 6 will simultaneously rotate the wheels 2, 3. As the wheel 2 rotates the wheel 3 causes the bar 7 to reciprocate, and the difference in ratio of rotation of the wheels 2, 3 will cause the scribe 11 to form a pattern on the disc, as shown in FIGURE 4, the bar 7 reciprocating with the rotation of the wheel 2. The ratio of rotation of the wheels 3, 4 with the wheel 2 will also cause the pattern formed to be constantly on a different track,'so that as rotation continues, the scribe will not trace exactly over the former lines drawn. When it is desired to change the pattern being drawn by the scribe, the rotation is stopped and the bar 7 lifted, raising the scribe off of the disc, and the guide 14 pivoted to another position. The stops 20, 20 limit the lateral movement of the guide 14, so that the scribe will not be moved off of the disc.

By rotating the wheel 4 in one direction of rotation and then reversing the direction of rotation, still other designs may be formed as shown in FIGURE 5. The number of different designs possible with this device is unlimited, and by the addition of a simple calibration table (not shown), a catalog of exact patterns may be maintained.

While the foregoing is considered a preferred form of the invention, it is by way of illustration only, the broad principle of the invention being defined by the appended claims.

What I claim is: i

In a pattern drawing device, a triangular rigid frame- Work, shafts extending through said framework at each apex, one end of said shafts being externally threaded, supporting feet mounted on said threaded ends and the other ends of said shafts having wheels rotatably mounted thereon, one of said wheels being of greater circumference than the others, each of said wheels having a grooved periphery and a flexible tubular belt mounted in said grooves and joining said wheels, one of said smaller wheels having a rotating handle thereon, a scriber bar having one end extending beyond said wheel of greater'circumference, a yieldable connecting means ro-' tatably mounted at one end to the other of said smaller wheels and anchored at the other end to one end of said scriber bar, scriber holding means on said scriber bar movable into contact with said wheel of greater circumference, a longitudinal slot in said scriber bar adjacent the end thereof extended beyond said wheel of greater circumference, a scriber bar guide having'one end extended through said slot in said scriber bar, said end exof greater circumference beneath said framework, said 3 means yieldably maintaining said scriber bar in scribing position above said wheel of greater circumference and said means being movable laterally with relation to the axis of said last mentioned Wheel.

References Cited in the file of this patent Tolman et a1. Mar. 2, 1909 4 Gran et a1. Feb. 13, 1912 Allen Sept. 24, 1912 Chaney June 24, 1919 Tietz Dec. 20, 1921 Fisher June 17, 1930 Grupp Nov. 13, 1934 FOREIGN PATENTS France June 9, 1954 

